Seismic steel ball bearing steel ball bearing seismic performance is set viscous dampers on both sides of the ordinary activities of laminated rubber bearing, while bearing normal use, the bridge beam deflection temperature, due to the slow speed of temperature change bits Ball bearing damping, viscous dampers almost no resistance to displacement, and in the earthquake, viscous dampers in the role of rapid earthquake forces, hardly displaced, will have a significant displacement of resistance, then the bridge Activities on the stand as a fixed bearing, so that all the piers of the bridge to bear the full force of the earthquake, achieve the purpose of shock absorption. Viscous damper damping medium, usually using ultra-high viscosity silicone oil, to prevent leakage. Seismic steel ball bearings in general by the cylinder, piston and damping materials, the piston in the cylinder reciprocating way to do activities ball bearing, have adequate holes on the piston, cylinder built with viscous material. Structure under the action of earthquake seismic force and viscous dampers work together with the structure of import rod force, pushing the piston motion ball bearings, pistons on both sides of the damping material produces a pressure differential bidirectional activity ball bearing, damping medium through the orifice, resulting damping force to achieve the purpose of energy dissipation. The internal structure of the damper varies, the speed index is generally between 0.1 to 1.0. Also damping force also with the piston area, the orifice size and length, cheer frequency, temperature, and other factors related to the damping material category. Viscous dampers and PTFE sliding bearing combination is also a common relief isolators. Seismic steel ball bearings in the late 1980s from the development in the United States, and is mainly used for house building structure. The nature of seismic steel ball bearing friction damping also supports, but it relies on two friction bearing surfaces to achieve normal function. Lower bearing plate bearing is a large concave spherical surface, the center portion of the seat when the earthquake seismic steel ball bearing. Along the lower bearing plate concave spherical swing displacement occurs, the use of a simple pendulum mechanism to extend the natural cycle of the lower part of the structure, to reduce the effect of seismic forces, while at the time of the earthquake, the next panel along swing seat swing the ball, the ball panel elevation changes, the superstructure is raised, potential energy by acting to achieve the purpose of the seismic energy consumption. Ball bearing swing panel after the earthquake, will be automatically reset by the weight of the upper structure. Holder can be slid in any direction, whose maximum size is primarily controlled by the design displacement. Unidirectional activity ball bearing | Beijing Ball bearings | rubber-Run-Run Company is provided by Hengshui Rubber Co. project. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company and you work into the brilliant, for a better future! You can also access (www.grgcxj.cn/supply_details_38570155.html), for more information about the company.